Derrick-cableway.



PATENTBD JAN. 20, 1903.;

110. 718,611. G. 11. EVANS.

DERRICK GABLEWAY. I APPLICATION F ILED MAR. 22. 1901.

H0 MODEL.

EWM flaw UNITED STATES PATENT OFFICE.

GEORGE HENRY EVANS, OF BRECKENRIDGE, COLORADO, ASSIGNOR TO AMERICANHOIST & DERRICK CO., OF ST. PAUL, MINNESOTA, A COR- PORATION.

DERRlCK-CABLEWAY.

SPECIFICATION forming part of Letters Patent N 0. 718,611, dated January20, 1903.

Application filed March 22,1901. Serial No. 52,300. (No model.)

Ton/ll whom it may concern:

Be it known that I, GEORGE HENRY EVANS, a citizen of the United States,residing at Breckenridge, in the county of Summit and State of Colorado,have invented certain new and useful Improvements in Derrick-Cableways,of which the followingis a specification.

My invention relates to improvements in derrick-cableways; and itconsists in the arrangement of derrick and cable hereinafterspecifically described in connection with means for adjusting said cableand for actuating the car arranged upon the cable.

The drawing represents a conventional View of my improved cableway.

In the drawing, A represents a derrick of ordinary constructionconsisting of a mast 2, mounted on a suitable platform 3, said mast andplatform being rotated by a bull-gear l, actuated by a suitable sourceof power.

B represents the main tackle-line of the derrick, running from the drumE over suitable pulleys F to the block G. Connected with the block G isthe main cable H, running to the tail-ropes I and I. These tailropes runover pulleys J upon the deadmen K and K to the drums L of the engine M.

N represents a skip provided with carrying- Wheels 0, by which it issupported upon the main cable H. The skip is provided with a suitabletripping device P. In order to draw the skip along the main cable towardthe mast, I provide the cord Q, running over the pulley R to the drum S,carried by the derrick-platform.

In operation, with the parts arranged as shown in the drawings, thewinding up of the main tackle-line Will draw the main cable into thedot-and-dash-line position shown, when the skip will slide down the maincable toward the deadmen for dumping. By winding up the skip-line Q theskip is drawn toward the mast, and by unwinding the main tackle-line theskip is lowered for reloading. In connection with the unwinding of themain tackle-line the tail-lines may be unwound to assist in bringing theskip into the proper unloading position. By operating the drums of theengine M the point of connection between the main cable and tail-linesmay be brought toward either of the deadmen, thus widening the areawithin which the material may be hoisted and dumped. In connection withthe adjusting of the tailropes the derrick-mast may be rotated to facethe proper point. The arrangement may be modified without departing fromthe invention, the scope of which is defined in the following claims.

I claim 1. A derrickcableway of the class described, comprising incombination, aderrick or mast provided with an adjustable tackleline,tail-ropes supported below the derrick end of said tackle-line, a cableconnecting said tackle-line and tail-ropes, means for actuating saidtail-ropes to adjust the lower end of said cable, and a blocktrolley-car arranged to travel upon said cable.

2. A derrick cableway of the class described, comprising in combinationa derrick provided with an adjustable tackle line, deadmen arrangedbelow the derrick end of said tackle-line, a cable connecting saidtackle-line with said deadmen, a block trolley car or skip arranged totravel upon said cable, and an actuating-cord therefor.

3. A derrick cableway of the class described, comprising in combinationa derrick provided. with an adjustable tackle -line, deadmen arrangedbelow the derrick end of said tackle line, a cable connecting saidtackle-line with said deadmen, a block trolley car or skip arranged totravel upon said cable, and a controlling-cord connected with said skip.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE HENRY EVANS.

Witnesses:

. JOHN H. MARKS,

JOHN H. SARSFIELD.

